#!/usr/bin/env python3

while True:
	age=input(" input you age:")
	age=int(age)
	if age<= 3 and age>0:
		print(" you are free")
	elif age>3 and age<=12:
		print("you must give 10$")
	elif age> 12:
		print(" you msut give 20$")
	else:
		break
